/* ==========================================================================
   ALARIC DESIGN V1 · site.css
   Shared chrome: brand, header, navigation, footer.
   ========================================================================== */

/* ---------- brand ---------- */

.brand {
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .70);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}

.site-header.is-stuck {
  background: rgba(255, 255, 255, .88);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 66px;
}

/* ---------- navigation ---------- */

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 36px);
}

.nav-link {
  position: relative;
  font-size: .875rem;
  color: var(--muted);
  transition: color var(--dur-1) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: currentColor;
  opacity: .45;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-2) var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-current { color: var(--ink); }

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-current::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  cursor: pointer;
}

.nav-toggle-bars {
  position: relative;
  width: 15px; height: 1px;
  background: var(--ink);
  transition: background-color var(--dur-1) var(--ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 15px; height: 1px;
  background: var(--ink);
  transition: transform var(--dur-2) var(--ease);
}

.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after  { top: 5px; }

.site-header.nav-open .nav-toggle-bars { background: transparent; }
.site-header.nav-open .nav-toggle-bars::before { transform: translateY(5px) rotate(45deg); }
.site-header.nav-open .nav-toggle-bars::after  { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }

  .nav {
    position: absolute;
    left: 0; right: 0; top: 100%;
    padding: 6px var(--gutter) 20px;
    background: rgba(255, 255, 255, .97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -32px rgba(11, 12, 15, .5);
    display: none;
  }

  .site-header.nav-open .nav { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 13px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--line);
  }

  .nav-list li:last-child .nav-link { border-bottom: 0; }
  .nav-link::after { display: none; }
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(44px, 6vw, 68px) 0 26px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.55fr 1fr 1fr 1.35fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.footer-tag {
  margin-top: 10px;
  font-size: .8125rem;
  color: var(--muted);
}

.footer-heading {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  font-size: .875rem;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: .75rem;
  color: var(--muted-2);
}

/* ---------- shared links ---------- */

.link-underline,
.icp {
  color: var(--muted);
  transition: color var(--dur-1) var(--ease);
}

.link-underline:hover,
.link-underline:focus-visible,
.icp:hover,
.icp:focus-visible { color: var(--ink); }

/* preview-only placeholders: present in the layout, intentionally inert */
.link-placeholder {
  color: var(--muted);
  cursor: default;
}

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 30px 32px; }
}

@media (max-width: 520px) {
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
}